Each of the D85 Series Alternating Relays are used with one control switch and are available in either SPDT or DPDT output configurations with or without a three-position selector switch which allows the unit to alternate the two loads as normal, or lock the relay to one load or the other. By locking the alternating relay to one load, the other load can be removed for service without rewiring the first load for continuous operation.
Additional Info: Dimension: 3.10 in. H X 1.70 in. D X 2.40 in. W, Temperature Rating: -28 to 65 deg C(-20 to 150 deg F)